[BurningFrog]

The way to do it is to release the SO2 directly into the stratosphere, where it stays for ~2 years, and does not affect rain, which happens far below.

[Turskarama]

One of the risks of a strategy like this is that we become reliant on it and use it as an excuse to solve the actual problem slower. Then if there's ever any disruption to SO2 production we get 20 years of warming all at once that we otherwise might have worked to avoid.

Betting on never having a disruption to that supply seems high risk to me.

[BurningFrog]

Ending fossil fuel usage and removing the excess CO2 will take at least 50 years.